package com.bbm.bbmanage.controller;

import cn.hutool.json.JSONObject;
import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.bbm.bbmanage.config.AliPayConfig;
import com.bbm.bbmanage.entity.AliPay;
import com.bbm.bbmanage.entity.HouseOrder;
import com.bbm.bbmanage.entity.Reserve;
import com.bbm.bbmanage.entity.consts.SysConst;
import com.bbm.bbmanage.mapper.HouseOrderMapper;
import com.bbm.bbmanage.mapper.ReserveMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

@Slf4j
@RestController
@RequestMapping("/alipay")
public class AliPayController {

    private static final String GATEWAY_URL = "https://openapi-sandbox.dl.alipaydev.com/gateway.do";
    private static final String FORMAT = "JSON";
    private static final String CHARSET = "UTF-8";
    //签名方式
    private static final String SIGN_TYPE = "RSA2";

    @Resource
    private AliPayConfig aliPayConfig;

    @Resource
    private HouseOrderMapper ordersMapper;

    @Resource
    private ReserveMapper reserveMapper;

    @GetMapping("/pay") // ?subject=xxx&traceNo=xxx&totalAmount=xxx
    public void pay(AliPay aliPay, HttpServletResponse httpResponse) throws Exception {
        // 1. 创建Client，通用SDK提供的Client，负责调用支付宝的API
        AlipayClient alipayClient = new DefaultAlipayClient(GATEWAY_URL, aliPayConfig.getAppId(),
                aliPayConfig.getAppPrivateKey(), FORMAT, CHARSET, aliPayConfig.getAlipayPublicKey(), SIGN_TYPE);

        // 2. 创建 Request并设置Request参数
        AlipayTradePagePayRequest request = new AlipayTradePagePayRequest();  // 发送请求的 Request类

        request.setNotifyUrl(aliPayConfig.getNotifyUrl());
        request.setReturnUrl(aliPayConfig.getReturnUrl());

        JSONObject bizContent = new JSONObject();
        bizContent.set("out_trade_no", aliPay.getTraceNo());  // 的订单编号
        bizContent.set("total_amount", aliPay.getTotalAmount()); // 订单的总金额
        bizContent.set("subject", aliPay.getSubject());   // 支付的名称
        //bizContent.set("userId", aliPay.getUserId());

        bizContent.set("product_code", "FAST_INSTANT_TRADE_PAY");  // 固定配置
        request.setBizContent(bizContent.toString());

        log.info("alipay：{}", bizContent.toString());

        // 执行请求，拿到响应的结果，返回给浏览器
        String form = "";
        try {
            form = alipayClient.pageExecute(request).getBody(); // 调用SDK生成表单
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }
        httpResponse.setContentType("text/html;charset=" + CHARSET);
        httpResponse.getWriter().write(form);// 直接将完整的表单html输出到页面
        httpResponse.getWriter().flush();
        httpResponse.getWriter().close();
    }

    @Transactional
    @PostMapping("/notify")  // 注意这里必须是POST接口
    public String payNotify(HttpServletRequest request) throws Exception {
        if (request.getParameter("trade_status").equals("TRADE_SUCCESS")) {
            System.out.println("=========支付宝异步回调========");

            Map<String, String> params = new HashMap<>();
            Map<String, String[]> requestParams = request.getParameterMap();
            for (String name : requestParams.keySet()) {
                params.put(name, request.getParameter(name));
            }

            String outTradeNo = params.get("out_trade_no");
            String gmtPayment = params.get("gmt_payment");
            String alipayTradeNo = params.get("trade_no");
            String subject = params.get("subject");
            String totalAmount = params.get("total_amount");
            String buyerId = params.get("buyer_id");
            String buyerPayAmount = params.get("buyer_pay_amount");
            //String userId = params.get("userId");

            String userId = subject.substring(0, subject.indexOf("_"));
            String houseId = subject.substring(2);

            String sign = params.get("sign");
            String content = AlipaySignature.getSignCheckContentV1(params);
            boolean checkSignature = AlipaySignature.rsa256CheckContent(content, sign, aliPayConfig.getAlipayPublicKey(), "UTF-8"); // 验证签名
            // 支付宝验签
            if (checkSignature) {
                // 验签通过
                System.out.println("交易名称: " + params.get("subject")); // userId
                System.out.println("交易状态: " + params.get("trade_status"));
                System.out.println("支付宝交易凭证号: " + params.get("trade_no"));
                System.out.println("商户订单号: " + params.get("out_trade_no")); // reserveId
                System.out.println("交易金额: " + params.get("total_amount"));
                System.out.println("买家在支付宝唯一id: " + params.get("buyer_id"));
                System.out.println("买家付款时间: " + params.get("gmt_payment"));
                System.out.println("买家付款金额: " + params.get("buyer_pay_amount"));

                HouseOrder houseOrder = new HouseOrder();
                houseOrder.setTradeStatus("已支付")
                        .setCreateTime(new Date())
                        .setTradeNo(alipayTradeNo)
                        .setGmtPayment(gmtPayment)
                        .setSubject(subject)
                        .setOutTradeNo(Long.valueOf(outTradeNo))
                        .setTotalAmount(totalAmount)
                        .setBuyerId(Long.valueOf(buyerId))
                        .setBuyerPayAmount(buyerPayAmount)
                        .setUserId(Integer.valueOf(userId))
                        .setTradePlatform("支付宝");
                ordersMapper.insert(houseOrder);


                LambdaUpdateWrapper<Reserve> updateWrapper = new LambdaUpdateWrapper<>();
                updateWrapper.eq(Reserve::getId, Integer.valueOf(outTradeNo))
                        .set(Reserve::getIsPay, SysConst.IS_PAY);

                reserveMapper.update(null, updateWrapper);


            }
        }
        return "success";
    }
}